<body md-src-pos="0..37"><pre md-src-pos="0..37"><code class="language-ruby" md-src-pos="0..37"><span md-src-pos='0..8'/><span md-src-pos='8..18'>def foo(x)</span>
<span md-src-pos='19..29'>  return 3</span>
<span md-src-pos='30..33'>end</span>
<span md-src-pos='34..34'></span><span md-src-pos='34..37'/></code></pre></body>